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Castor and Pollux Dog Food Review

Castor and Pollux review
  • 9.5/10
    Woof Whiskers Rating - 9.5/10


Castor and Pollux dry dog food comes in a wide array of recipes (great diversity for allergy prone dogs) and formulas (puppy, senior, etc). The Ultramix lineup has an impressive nutrient content and is our clear choice among the rest of their offerings.

Last Updated: March 8, 2022 by Lisa Melillo

Pet care and quality dog food are at the top of every dog owner’s list. High-quality ingredients and organic ingredients in your pet’s food may be what is important to you. 

Just like we spend hundreds of dollars every month picking out the best food for us, what we feed our pets needs to be just as meticulously chosen. Castor and Pollux are a popular pet food manufacturer amongst pet owners. Castor and Pollux Natural Petworks dog food have been filling our pups bellies since 1999 and they have a long and positive history. 

Castor and Pollux describes itself as a leader in the organic pet food industry, and for good reason. The company was the first certified organic dog and cat food to meet all of the requirements set out by the USDA’s National Organic Program (NOP), and continues to meet and exceed those standard today, producing a high-quality pet food to keep your dogs healthy and happy.

Quality of Ingredients

The Castor and Pollux company places a strong emphasis on being known as an organic product, and as such you can rest assured that all of the ingredients that go into each bag are free of chemicals, hormones, antibiotics, or any of the other stuff that some competitors have that might not be the best for your dog. To ensure this standard, a USDA accredited entity oversees all of the companies purchases, to make sure only the best make it through inspection and into your dog’s bowl.

All of Castor and Pollux’s food is manufactured at their facilities in Amarillo, Texas, so pet owners can rest assured that their product is always American made. Additionally, the company ensures that it sources all of its ingredients from farms right here in the United States, ensuring that they do not use any products containing some of the potentially harmful additives that might be found in meats and vegetables sourced from overseas.

Full Ingredients and Analysis

Analyzing the first 10 ingredients in a dog food is a great way to understand the overall nutrient content of the dog food because AAFCO requires all dog food ingredients to be listed in order of predominance by their weight. Here’s a closer look at what’s inside Castor & Pollux Natural UltraMix Grain-Free Real Chicken & Sweet Potato Recipe.

Full Ingredients:

Chicken, Chicken Meal, Turkey Meal, Sweet Potatoes, Dried Potatoes, Dried Peas, Chicken Fat (Preserved with Mixed Tocopherols), Salmon Meal, Pea Protein, Potato Protein, Natural Flavor, Chicken Liver, Bananas, Carrots, Apples, Cranberries, Blueberries, Dried Organic Alfalfa Meal, Salmon Oil, Salt, Minerals (Zinc Amino Acid Complex, Zinc Sulfate, Iron Amino Acid Complex, Manganese Amino Acid Complex, Copper Amino Acid Complex, Potassium Iodide, Cobalt Amino Acid Complex, Sodium Selenite), Vitamins (Vitamin E Supplement, Vitamin A Supplement, Vitamin B12 Supplement, D-Calcium Pantothenate, Vitamin D3 Supplement, Niacin, Riboflavin Supplement, Biotin, Pyridoxine Hydrochloride, Folic Acid, Thiamine Mononitrate), Choline Chloride, Yucca Schidigera Extract, Dried Lactobacillus Plantarum Fermentation Product, Dried Lactobacillus Casei Fermentation Product, Dried Enterococcus Faecium Fermentation Product, Dried Lactobacillus Acidophilus Fermentation Product, Rosemary Extract.

  • 42.2%


  • 18.9%


  • 35%


This Ultramix Chicken and Sweet Potato recipe has incredibly high protein for a dry dog food, one of the highest we’ve seen. If you currently feed your dog a low quality food with low protein and plan on switching to this brand, be certain to slowly transition your pup to ensure minimal digestion issues.

Beyond the excellent protein contents, you’ll see a lot of fresh vegetables and fruits for the carbs.

Ingredients You May Wonder About:

  • Chicken: Chicken is an extremely common meat used in dog foods and typically the cheapest meat source available. There’s nothing wrong with feeding your dog chicken, but it’s also not uncommon for dogs to have a chicken allergy. If you find your dog excessively itching, it would be best to try a dog food with no chicken products.
  • Carrot: Carrots are high in fiber, beta-carotene, and Vitamin A.
  • Alfalfa: Alfalfa is an herb with many health benefits including arthritis pain relief and it’s loaded with important nutrients.
  • Mixed tocopherols: Tocopherol may sound like a nasty chemical, but it’s actually a naturally occuring organic chemical compound and a type of Vitamin E. Tocopherol can be derived from various nuts and vegetable oils. These serve as a natural preservative for dog foods.
  • Copper: Copper is found in nearly all living things and is required in the diet to keep a dog healthy. As a result, nearly all dog foods add small levels of copper in accordance to AAFCO guidelines.
  • Calcium pantothenate: This is another B Vitamin that’s healthy for your dog and considered a requirement for a complete diet by the AAFCO. Reference
  • Niacin: Also known as Vitamin B3.
  • Pyridoxine: Also known as Vitamin B6, a healthy part of your dog’s diet. Reference
  • Thiamine mononitrate: This is a scientific name for Vitamin B1. Too little Vitamin B1 can cause a variety of health issues and any excess is easily flushed from the body. Most manufacturers add this dog food to stay in line with AAFCO guidelines. Reference
  • Yucca: Yucca is a plant that has the primary benefit of having your dog’s stool smell less. It’s a very common dog food ingredient. Reference
  • Lactobacillus casei: Lactobacillus Casei is a probiotic with many known benefits in humans. Reference
  • Lactobacillus acidophilus: Lactobacillus Acidophilus is a probiotic added to help promote a healthy stomach and digestion in your dog.
  • Rosemary: Rosemary is a natural preservative and is very common in dry dog foods.
  • salmon meal: Salmon meal is made using off-cuts of salmon cooked at very high heat to make a high protein powder. Bones and other by-products are not used to make a salmon meal, so this is perfectly suited to your pup. 
  • fatty acids: Animals need fatty acids in their diets, and omega 3 and omega 6 are popular ingredients to add to pet food to ensure our furry friends are getting the recommended dose.

About the Ingredient List

Every dog needs a form of protein in their diet, whether it is an animal protein or not. Castor and Pollux dog food has almost 19% protein in their food, which is towards the lower end of the recommended daily amount of protein per day. 

Gluten-free and grain-free options are available from Castor and Pollux. These ranges are great for pups with allergies and sensitive stomachs. 

Castor and Pollux Product Line

According to the company website, Castor and Pollux currently only produces three lines of dog foods, Natural Ultramix, Organix, and Pristine, although the latter two seem to be much more heavily advertised. The company also manufactures canned food, treats, and raw foods, all to supplement and add variety to their base dry kibble.


Organix is the mix that really launched the company, and according to their website it is “the only complete line of USDA organically certified pet food” in the country today. All Organix foods are made either with free-range turkey or chicken as their main ingredient, are produced without chemical pesticides, synthetic fertilizers, artificial preservatives, added growth hormones or antibiotics, are GMO free, and prepared in an organically certified kitchen in the USA. Additionally, all bags of Organix and free of any corn, wheat, or soy, and have healthy pre- and probiotics, as well as Omega-3 fatty acids, added in to ensure maximum nutrition, ease of digestion, and a shiny coat for your pet.


Pristine foods all are made with what the company calls the “Pristine Promise,” which says that all of the proteins that go into their bags are responsibly sourced, grown, and harvested. This means that protein sources are “raised with access to fresh air, natural light and space to roam like free-range, cage-free organic chicken and turkey and grass-fed lamb and beef,” fish are caught from their natural habitats rather than factory farms, and fruits and veggies are grown “without synthetic fertilizers or chemical pesticides, on farms that care for the earth.” Aside from the responsibly sourced ingredients, Pristine also promises that all of its bags are grain free, without any corn wheat or soy, and have no artificial preservatives, flavors or colors

Natural Ultramix

Natural Ultramix was an all-natural dog food packed full of omega 3 and 6; however, this range doesn’t appear to be available at this moment in time.

Castor And Pollux Available Food Forms

There are plenty of dog food options available on Castor and Pullox’s website to choose from. Check out their food choices here

Castor And Pollux Dry Dog Food

Castor and Pollux have six dry dog food options for you to choose from. They have small breed and puppy food options, as well as grass-fed beef dry food and grain-free dry for your pup. 

Castor And Pollux Freeze-Dried Raw Dog Food

Freeze-dried raw dog food is perfectly safe for your furry friend. Manufacturers freeze-dry raw meat and other ingredients to keep them fresh and full of nutrients. 

Castor And Pollux Wet Dog Food

Canned wet dog food is very convenient. You can take canned wet food on day trips and for weekends away with your pup. This is a very convenient way to feed your dog, at home or away. Of course, Castor and Pollux have wonderful wet dog food options for you and your dog to choose from. 

Castor And Pollux Dog Meal Toppers

Meal toppers add extra goodness and flavor to your dog’s food. Fussy dogs or dogs that need that added boost of nutrients can add Castor and Pollux meal toppers to meals. 

Castor And Pollux Dog Treats

Castor and Pollux organic dog cookies are extremely popular with pups and owners all over the country. The number one ingredient in their organic cookies is free-range organic chicken; who said cookies had to be unhealthy hey!

Read Related Topic: Best Dog Food Toppers

About Castor & Pollux

Castor and Pollux was first founded in 2000 by Shelley Gunton and Brian Connolly at their home in Clackamas, Oregon. Shelley and Brian first got the idea to create an organic product after adopting Joey, a Lab/pointer mix puppy, and realizing that there was nothing on the market that suited the style of food they wanted to feed him. And thus, a business was born.

As the years went on, Castor and Pollux spread out from their humble Oregonian beginnings and caught the attention of the international Merrick pet food company. Merrick purchased the company in April, 2012, and moved the company’s manufacturing facilities to Amarillo, Texas, where they remain today. Despite the move, however, the company still maintains the high standards of their small business background, and remains one of the country’s only certified organic pet food products on the market.

Where to Buy

Over the past couple of years, Castor and Pollux has expanded from a relatively small local product to a major player that can be readily found at most of the big-name pet food retailers.  Many Petco’s, PetSmart’s, and others now regularly stock Castor and Pollux products on their shelves, and it can also be found in a large number of smaller specialty shops as well. For those that prefer to do their shopping online, you can also find Castor and Pollux sold from websites like Chewwy and Amazon, as well as most other reputable online pet food retailers. The company website also provides a handy link to sites that sell their product, in addition to a store locator to let you find the closest place to buy their product in person.

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